How to use the @aws-cdk/aws-ec2.VpcNetwork function in @aws-cdk/aws-ec2

constructor(parent, id, props) {
    super(parent, id, props);

    // Create a network for the application to run in
    this.vpc = new ec2.VpcNetwork(this, 'vpc', {
      maxAZs: 2,
      natGateways: 1
    });

    // Create an ECS cluster
    this.cluster = new ecs.Cluster(this, 'cluster', {
      vpc: this.vpc
    });

    // Create S3 bucket
    this.screenshotBucket = new s3.Bucket(this, 'screenshot-bucket', {
      publicReadAccess: true
    });

    // Create queue
    this.screenshotQueue = new sqs.Queue(this, 'screenshot-queue');